Grill brush



FIG. 1 is a bottom perspective view of a grill brush illustrating my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom perspective view of a grill brush illustrating my new design;

FIG. 8 is a front view thereof;

FIG. 9 is a right side view thereof;

FIG. 10 is a left side view thereof;

FIG. 11 is a bottom view thereof; and,

FIG. 12 is a top view thereof.

The broken lines in the drawings depict unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a grill brush, as shown and described. 